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Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 199 · 40 questions
TalentJR

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

NameDateTime takenScore ___ / 40
  1. 1.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
  2. 2.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) nail (d) magnet
  3. 3.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
  4. 4.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) the rope gets shorter (d) pulling down is easier
  5. 5.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
  6. 6.True or false: a well pulley is a wheel and axle. (a) True (b) False
  7. 7.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
  8. 8.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
  9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) a magnet (d) a balloon
  10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins (d) the same string
  11. 11.True or false: a steering wheel is a wheel and axle. (a) False (b) True
  12. 12.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 20 cm (d) 5 cm
  13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
  14. 14.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a doorknob (c) a crowbar (d) a sloping road
  15. 15.True or false: a slide is an inclined plane. (a) False (b) True
  16. 16.True or false: a see-saw is a lever. (a) True (b) False
  17. 17.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a spoon lifting a lid (c) a slide (d) a well pulley
  18. 18.True or false: a flagpole is an inclined plane. (a) True (b) False
  19. 19.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
  20. 20.True or false: a ramp uses a pulley. (a) False (b) True
  21. 21.True or false: a ramp is an inclined plane. (a) False (b) True
  22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a mirror (c) a small paper cup (d) coins as the load
  23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
  24. 24.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
  25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a small paper cup (d) a balloon
  27. 27.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
  28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) how hard we must pull (c) the lifting height (d) the same cup of coins
  29. 29.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
  30. 30.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
  31. 31.⚙️ Which simple machine is a crowbar? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
  32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) coins as the load (d) a magnet
  33. 33.True or false: string is needed for the thread-reel pulley. (a) False (b) True
  34. 34.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
  35. 35.⚙️ Which of these is a lever? (a) a crowbar (b) a sloping road (c) a flagpole (d) a well pulley
  36. 36.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
  37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
  38. 38.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
  39. 39.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
  40. 40.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle

Answer key

  1. needed
  2. rope
  3. harder
  4. pulling down is easier
  5. not needed
  6. False
  7. True
  8. it could fall on you
  9. an empty thread reel
  10. number of pulleys
  11. True
  12. 20 cm
  13. True
  14. a doorknob
  15. True
  16. True
  17. a well pulley
  18. False
  19. not needed
  20. False
  21. True
  22. a mirror
  23. we change it
  24. not needed
  25. we measure it
  26. a balloon
  27. not needed
  28. how hard we must pull
  29. needed
  30. a pulley
  31. a lever
  32. a magnet
  33. True
  34. needed
  35. a crowbar
  36. not needed
  37. False
  38. needed
  39. False
  40. a wheel and axle

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